Unit One Chemistry – Horsham College Chapter 6 – VCE Chemistry Measurement in Chemistry.
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Chemical Composition-Chapter 6
Atoms elements
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Section 3.6—Counting Molecules So the number of molecules affects pressure of an airbag…how do we “count” molecules?
Balancing chemical reactions. This is an example of an unbalanced chemical reaction. There are two oxygen atoms on the left but only one on the right.
Chapter #6 Chemical Composition. Chapter Contents 6-1 Chemical Composition 6-2 Counting Units 6-3 Counting Atoms By the Gram 6-4 Counting Molecules by.
1 Moles and Stoichiometry Ch. 12 2 The Mole n OBJECTIVES: –Describe the mole concept –Calculate the mass of a mole of any substance. –Convert between.
Chapter 14 The Ideal Gas Law and Kinetic Theory. Hydrogen Oxygen Carbon Sodium Every element has an atomic mass (1 u = 1.6605 x 10 -27 kg) Measured in.
The Greeks - Democritus 450 B.C. Believes there is a fundamental particle that cannot be broken. The particle is invisible. Coins the term “atom”
CHAPTER 2 Matter and Atoms 2.1 Matter and the Elements.